Type 8840 comes with ready to install modules of tried and tested Bürkert process valves. The valve cluster, based on a modular valve body, allows different configurations. The individual parts are joined hermetically tight and in a very compact way. No installation effort for pipework, fittings or sealings is needed. For the sizes DN20 (¾") and DN25 (1") orbital welding is used. The smaller variants in DN10 are threaded together using trusted graphite seals. To avoid dangerous water hammer, all valves have the flow direction below the seat. This is made possible by the two variants for the fluidic main function distribution and collecting, mixing or feed. Depending on the requirement and preferred type of automation, it is possible to choose from different actuator variants. The robust CLASSIC actuators (in stainless steel or plastic) are controlled by a central valve island or by a pilot valve. The proven ELEMENT actuators allow a simple decentralized automation by using intelligent control heads Furthermore it is possible to expand the system by using continuous control valves, sensors, customer specific pipework or further accessories.
Features
Type 8840 - Modular Process Valve Cluster – Distributor and Collector Features:
- Valve cluster ready for installation
- Compact design without any potential leakage
- No assembly effort
- No piping between the valves neede
- Trusted actuators for simple automation
Specifications
Type 8840 - Modular Process Valve Cluster – Distributor and Collector Specifications:
| Product Properties | |
| Material | |
| Housing | Precision cast stainless steel 316L (CF3M) |
| Actuator | |
| INOX DN 10 | Stainless steel (on request) |
| CLASSIC DN 20, DN 25 | PA (PPS on request) |
| ELEMENT DN 20, DN 25 | Actuator: PPS, cover: stainess steel 1.4561 (316Ti) |
| Seal | PTFE |
| Packing gland | PTFE seal with spring compensation |
| Nominal diameter (port connection) | DN 10 (threaded) DN 20, DN 25 (welded) |
| Control function | CF A (closed by spring force) CF B (opened by spring force) on request |
| Number of valve positions | |
| DN 10 (threaded) | 2…9 (clusters with larger number of valves on request ) |
| DN 20, DN 25 (welded) | 2…5 (clusters with larger number of valves on request ) |
| Performance data | |
| Nominal pressure | PN 25 (housing) |
| Pilot pressure | Max. 10 bar |
| Medium data | |
| Medium | Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis and organic solvents |
| Medium temperature | - 10…+ 180 °C |
| Viscosity | Max. 600 mm²/s |
| Control medium | Neutral gases, air |
| Process/Port connection & communication | |
| Port connection | |
| Threaded connection | G ⅜…G 1, NPT ⅜…NPT 1 |
| Welded connection | ISO 4200 (on request) |
| Clamp connection | DIN 32676 series B (on request) |
| Pilot air ports | |
| INOX DN 10 | Female elbow fitting (hose Ø 4) |
| CLASSIC DN 20, DN 25 | G ¼ |
| ELEMENT DN 20, DN 25 | Push-in connector 6/4 |
| Environment and installation | |
| Ambient temperature | |
| INOX DN 10 | 0…+ 60 °C |
| CLASSIC DN 20, DN 25 | - 10…+ 60 °C (PA actuator) + 5…+ 140 °C (PPS actuator) |
| ELEMENT DN 20, DN 25 | 0…+ 60 °C |
Applications
Type 8840 - Modular Process Valve Cluster – Distributor and Collector Applications:
- Automotive industry – cooling of welding robots and tooling
- Plastic injection molding – temperature control of mold cooling circuits
- Food & beverage – cooling during pasteurization or brewing processes
- Packaging machinery – thermal management for sealing equipment
- Industrial automation – centralized cooling control for multiple zones
Q & A
Type 8840 - Modular Process Valve Cluster – Distributor and Collector Q & A:
Downloads
Download Bürkert Type 8840 - Modular Process Valve Cluster Datasheet
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